Patent US4490765A successfully refreshed from Google Patents.
US4490765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diskette for cleaning a floppy-disc drive head
Assignee: Individual
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Filing: 1983-09-01
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Granted: 1984-12-25
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Expires: 2003-09-01
Abstract
Abstract The present invention provides a cleaning diskette suitable for use in an apparatus including a floppy-disc drive head, a platen and a foam pad, the diskette including a jacket having folded flaps to form a flat envelope and a cleaning disc received in the jacket and having a central circular hole formed therein, the jacket including a central circular window aligned with the central circular hole of the cleaning disc and having a diameter slightly larger than that of the central circular hole, an elongated radial slot extending from a position corresponding to the outermost track of the floppy disc to a position corresponding to the innermost track of the same and through which the drive head contacts with the surface of the cleaning disc, at least one circular opening located adjacent to the edge of the central circular window in the jacket and substantially diametrically opposed to the radial slot, and at least one cleaning opening located in the area of the jacket with which the folded flaps of the jacket do not interfere and in which there are not the central circular window, radial slot and circular opening and in which the jacket does not contact with the platen and foam pad, the cleaning opening having a radial dimension substantially equal to the length of the radial slot.
Inventors
- 👤 Yoshiro Nakamats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:29
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; G11B23/0327; G11B5/00; G11B5/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
394 words
A cleaning diskette comprising a rectangular jacket (18) with a central window (52) and an annular cleaning disc (20) therewithin and having a center hole (1) aligned with and smaller than said window (52), said diskette being suitable for use in a floppy disc drive apparatus having: (1) a floppy disc drive head (6), (2) an elongated platen (8) adapted to extend from an edge of an inserted diskette to adjacent the jacket central window (52) and generally tangential to the disc center hole (1), (3) and a foam pad (9) spaced arcuately from the side of said drive head (6) remote from said platen (8) and generally transversely across from the inner terminus of said platen (8), (4) said platen (8) and foam pad (9) being positioned to be disposed on the side of an inserted diskette jacket (18) opposite from said head (6) to urge the jacket toward the drive head (6); said cleaning diskette further comprising, in combination: (a) folded flaps (11) on at least some of the sides of said jacket (18) to form a flat envelope, (b) an elongated radial slot (12) extending through said jacket (18) and exposing said cleaning disc (20) for engagement on one side of said jacket by the said drive head (6), said slot extending from the outermost to the innermost track of said disc, (c) at least one circular opening (26) extending through said jacket (18) and disposed adjacent the edge of said central window (52) for registering with an index hole (53) on said disc (20), (d) a plurality of cleaning openings (55-56, 58-60, 62-73) disposed on the opposite of said one side of said jacket (18) and with said cleaning openings extending radially a distance generally equal to the length of said radial slot (12); said openings being disposed on a disc radius line (57, FIG. 8) which extends other than perpendicular to the sides of said rectangular jacket (18), (e) characterized in that said cleaning openings (55-56, 58-60, 62-73) are out of registry with said folded flaps (11), said central window (52), said radial slot (12) and said circular opening (26) of said jacket (18); and furthermore are positioned to be out of registry with said elongated tangential platen (8) and said arcuately spaced foam pad (9) when the platen and pad urge said jacket toward said drive head (6).
Claim 2
Dependent Claim
394 words
A cleaning diskette comprising a rectangular jacket (18) with a central window (52) and an annular cleaning disc (20) therewithin and having a center hole (1) aligned with and smaller than said window (52), said diskette being suitable for use in a floppy disc drive apparatus having: (1) a floppy disc drive head (6), (2) an elongated platen (8) adapted to extend from an edge of an inserted diskette to adjacent the jacket central window (52) and generally tangential to the disc center hole (1), (3) and a foam pad (9) spaced arcuately from the side of said drive head (6) remote from said platen (8) and generally transversely across from the inner terminus of said platen (8), (4) said platen (8) and foam pad (9) being positioned to be disposed on the side of an inserted diskette jacket (18) opposite from said head (6) to urge the jacket toward the drive head (6); said cleaning diskette further comprising, in combination: (a) folded flaps (11) on at least some of the sides of said jacket (18) to form a flat envelope, (b) an elongated radial slot (12) extending through said jacket (18) and exposing said cleaning disc (20) for engagement on one side of said jacket by the said drive head (6), said slot extending from the outermost to the innermost track of said disc, (c) at least one circular opening (26) extending through said jacket (18) and disposed adjacent the edge of said central window (52) for registering with an index hole (53) on said disc (20), (d) a plurality of cleaning openings (55-56, 58-60, 62-73) disposed on the opposite of said one side of said jacket (18) and with said cleaning openings extending radially a distance generally equal to the length of said radial slot (12); said openings being disposed on a disc radius line (57, FIG. 8) which extends other than perpendicular to the sides of said rectangular jacket (18), (e) characterized in that said cleaning openings (55-56, 58-60, 62-73) are out of registry with said folded flaps (11), said central window (52), said radial slot (12) and said circular opening (26) of said jacket (18); and furthermore are positioned to be out of registry with said elongated tangential platen (8) and said arcuately spaced foam pad (9) when the platen and pad urge said jacket toward said drive head (6).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |